高速铁路隧道二次衬砌脱空原因和整治及预防措施

详细信息    查看全文 | 推荐本文 |

英文篇名：Discussion on Causes,Remediation and Precautionary Measures for Unseen Voids in the Secondary Linings of High-speed Railway Tunnel 作者：杜鹏亮 英文作者：Du Pengliang;China Railway 22~(nd) Bureau Group 4~(th) Engineering Co.Ltd.; 关键词：高速铁路隧道 ; 二次衬砌 ; 脱空 ; 整治措施 ; 预防措施 英文关键词：high-speed railway tunnel;;secondary lining;;voids;;remediation measure;;precaution measure 中文刊名：TDJS 英文刊名：Railway Construction Technology 机构：中铁二十二局集团第四工程有限公司; 出版日期：2019-01-15 出版单位：铁道建筑技术 年：2019 期：No.306 语种：中文; 页：TDJS201901023 页数：4 CN：01 分类号：103-106

摘要

高速铁路隧道二次衬砌脱空直接关系到铁路运营安全。本文首先提出了二次衬砌脱空是由于工艺设备改进缓慢和施工过程工序把控不严等原因造成。介绍了回填注浆法和开窗二次浇筑法两种二次衬砌脱空的整治措施,以及两种整治措施的优缺点和注意事项,随后提出了优先选用先进工艺设备、加强过程管控和适度改进现有工艺设备的预防措施。优先选用先进工艺设备方面介绍了目前较为先进的数控防水板台车和综合性二次衬砌台车两种设备;加强过程管控方面提出了严控超欠挖、测算应浇筑方量、严控防水板安装质量等方面的要求;适度改进工艺设备方面介绍了简易分层分窗浇筑、拱顶灌满回馈装置、带模注浆等方法。最后通过实例验证二次衬砌脱空整治措施和预防措施,均取得了较好的效果。
        The secondary liner voids of high-speed railway tunnel is directly related to the safety of railway operation. It is first proposed that the secondary liner voids is caused by the slow improvement of process equipment and the lax control of the construction process. This paper introduces the remediation measures for the unseen voids in the secondary lining,namely the backfilling-grouting method and the secondary pouring with opening window, as well as the advantages and disadvantages of the two remediation measures and the precautions for selecting advanced process equipment, strengthening process control and moderately improving the existing process equipment. Then, it introduces two kinds of advanced equipment,the CNC waterproofing trolley and the comprehensive secondary lining trolley, and puts forward the requirements of strictly controlling the over-excavation, measuring the amount of pouring, strictly controlling the quality of the waterproofing board.The methods of simple laminated window casting, vault filling feedback device and mold grouting are introduced in the proper improvement of the process equipment. Finally, good results have been obtained with the example analysis on controlling and preventing measures for the secondary lining voids.

引文

[1]沈天佑.铁路隧道二衬背后脱空防治措施[J].价值工程,2018(4):140-141.
    [2]梁敏.隧道二衬脱空原因分析及防治[J].铁道建筑,2014,54(6):95-97.
    [3]赵继平.隧道衬砌分层逐窗浇筑混凝土施工工艺[J].西部探矿工程,2018(4):193-194.
    [4]杨富民,孙成晓.铁路隧道衬砌脱空病害整治新材料及新工艺的应用研究[J].铁道建筑,2018(1):75-77.
    [5]黄斌.隧道二衬混凝土质量通病成因及防治[J].中国新技术新产品,2011(23):66.
    [6]王义东.隧道衬砌拱顶脱空原因分析和处理及防治[J].科技与创新,2015(9):142-143.
    [7]刘国峰.隧道二次衬砌背后脱空原因分析及处理措施[J].城市建设理论研究:电子版,2013(3):44-45.
    [8]张文达,张千里,马伟斌,等.铁路隧道拱顶病害分析及整治措施[J].中国铁路,2015, 5(1):34-36.
    [9]高永刚.铁路隧道拱顶病害及整治措施分析[J].建材与装饰,2018(1):261.
    [10]赵金秋.铁路隧道拱顶病害分析及整治措施[J].城市建设理论研究:电子版,2015, 5(14):34-36.
    [11]李盛国.铁路隧道拱顶病害及整治措施的思考[J].华东科技:学术版,2017(12):126.
    [12]刘明.高速铁路隧道拱顶病害分析及对策探讨[J].工程技术,2017(12):250.